Question

What should we be taken away from 3x² - 4y² + 5xy + 20 to obtain - x² - y² + 6xy + 20?

Answer 1

Hence, the expression ( 4 x 2 - 3 y 2 - x y ) should be taken away from 3 x 2 - 4 y 2 + 5 x y + 20 to obtain - x 2 - y 2 + 6 x y + 20 .

Explanation: